On 7/14/2019 7:05 AM, Jim Wilkins wrote:
"Jim Wilkins" wrote in message
I'd be threading the back 1-1/2 - 8 to fit a BS-0 dividing head and
an adapter I made for my South Bend. ...

The model for this is a faceplate with four removeable jaws that mount
in radial tee slots, which I saw in an old book. The gear blank mounts
on spacers that allow turning the OD and both faces of the edge, and
the jaws only center it and then are removed, they don't control
wobble or need to be strong enough to resist cutting force.
http://www.neme-s.org/Model_Engineer...&%20Clamps.pdf

In that case, you could true up the face on the lathe and everything
would be nicely aligned